Walter Brattain dies in Seattle of Alzheimer's disease.

Walter Brattain is born in Amoy, China, where his father, Ross R. Brattain, teaches. His mother is Ottilie Houser. After returning with his parents to USA in 1903, he is raised in small towns in Oregon and Washington.

Brattain and Bardeen create the first transistor, sharing credit with William Shockley, their supervisor who almost immediately invents the junction transistor. The transistor replaces bulky vacuum tubes in electronic devices, leading to the first tubeless radio.

Walter Brattain becomes a member of Bell Laboratories. Brattain's research focuses on the surface physics of tungsten and later in the surfaces of the semiconductors cuprous oxide and silicon.

Walter Brattain attends Queen Anne High School in Seattle.

Walter Brattain returns to Bell Laboratories and joins the semiconductor division of William Shockley, inside the newly-organized Solid State Department. In 1946, Shockley starts a general investigation of semiconductors to produce a practical solid state amplifier.

Walter Brattain works at the National Bureau of Standards as a radio engineer. He leaves a year later to join Bell Laboratories.

Walter Brattain between 1962 and 1972 frequently teaches as Adjunct Professor courses at Whitman College.

Walter Brattain earns his Ph.D. in physics under John T. Tate at University of Minnesota with a dissertation on electron impact in mercury vapour.

Walter Brattain attends Tonasket High School.

Walter Brattain receives one third of the Nobel Prize for Physics along with John Bardeen and William Shockley "for their researches on semiconductors and their discovery of the transistor effect". Transistors have allowed the subsequent development of computers, cell phones, fax machines, satellites, and virtually all of modern electronics.

Walter Brattain earns his MA in physics at University of Oregon.

Walter Brattain attends Whitman College in Walla Walla with financial help from his aunt.

During World War II Walter Brattain develops methods of submarine detection under a contract with the National Defense Research Council at Columbia University.

Walter Brattain graduates at Moran School in Bainbridge Island.